Our Kardashian sources tell us … her social media post on June 25 is purely a coincidence — she had no idea she was pregnant at the time. We’re told Khloe’s just shy of 3 months pregnant now … and the surprise 33rd bday party Tristan threw her was 3 months ago.

We’re also told “Dad” and “Mom” are just lovey dovey nicknames the couple have for each other … though they now have a deeper meaning.

Want more proof Khloe didn’t know she and her bf were going to have a baby? Here’s what she tweeted the day after the party …

Ok now I need a hangover remedy lol— Khloé (@khloekardashian) June 26, 2017